This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 81 |
| 5 | 243 |
| 6 | 729 |
| 7 | 16384 |
| 8 | 65536 |
| 9 | 1953125 |
| 10 | 9765625 |
| 11 | 48828125 |
| 12 | 2176782336 |
| 13 | 13060694016 |
| 14 | 678223072849 |
| 15 | 4747561509943 |
| 16 | 33232930569601 |
| 17 | 2251799813685248 |
| 18 | 18014398509481984 |
| 19 | 144115188075855872 |
| 20 | 12157665459056928801 |
| 21 | 109418989131512359209 |
| 22 | 10000000000000000000000 |
| 23 | 100000000000000000000000 |
| 24 | 1000000000000000000000000 |
| 25 | 108347059433883722041830251 |